A person who is dumb, someone who is
schizophrenic, someone who are apart of the
spectrum. Someone doing something stupid or something stereotypical someone on the
spectrum would do.
"That girl Arena decided to arm wrestle great champion Muhammad, I swear she was sped in the head!" "That dude
Elijah is schizophrenic, so
people just started calling him sped in the head. Seriously, what has the
world come to?" "Dave, shut your sped ass up."